Taken from original list here: boxd.it/zllbC

Categories:
1. Random Letter Generator (Google random letter generator and generate a letter from A to Z. Watch a film noir starting with that letter, ignoring a, an, the, or foreign-language equivalents.)
2. Featuring a macguffin
3. Featuring "one last job"
4. Sci fi noir
5. Asian noir (set in Asia, featuring Asian characters, or made in Asia)
6. Latin noir (set in Latin America, featuring Latinx characters, or made in Latin America)
7. A noir from a country that isn't yet green on your Letterboxd map
8. Eddie Muller’s 25 Noirs That Will Stand the Test of Time
9. Paste Magazine's 100 Best Film Noirs of All Time
10. 50 International Film Noir Classics that Everyone Should See
11. Oscar-nominated noir
12. Oscar-winning noir
13. Directed by Fritz Lang
14. Directed by Robert Siodmak
15. Starring Robert Mitchum
16. Starring Joan Bennett
17. Written by or based on work by Raymond Chandler
18. Written by or based on work by Cornell Woolrich
19. Written by or based on work by a woman
20. Studio: Warner Bros.
21. Studio: Paramount
22. Studio: Universal International Pictures
23. Costumes by Edith Head
24. Cinematography by James Wong Howe
25. With "Big" in the title
26. With "Confidential" in the title
27. With a one-word title
28. Watch a pre-1960 film in color, or a post-1960 film in black and white
29. Adapted to radio
30. Any film noir on your watchlist